A <playlist> tag for audio playlists, most importantly in M3U, would be very
useful. It would work as follows:
<playlist name="Broadcast">
Broadcast1.mp3
Broadcast2.mp3
Broadcast3.mp3|My favorite song
Bad-Url.exe
</playlist>
Output:
[[Play back the following files:]]
Broadcast1.mp3
Broadcast2.mp3
My favorite song
File not found: Bad-Url.exe
These would have to exist either locally, or in the shared repository (Commons
or similar).
The "Play back the following files:" link would point to a
title=pagename&action=m3u&name=Broadcast&extension=.m3u URL which would send
back an M3U file with the full URLs of all the valid filenames (one per line) in
the playlist specified with "name". The action would have to return a page of
the type "audio/x-mpegurl".
The extension=.m3u is necessary because some players only recognize an M3U as
such if the URL contains the extension. URL rewriting might be used to
accomplish the same effect. For security reasons, &extension=... should accept
no other value than ".m3u", and be only valid in combination with the "m3u" action.